Train-stop system.



J. H. BOOM.

TRAIN STOP SYSTEM.

AyPLxcATIoN FILED JAN.10,1912.

1,053,899, Patented Feb. 18, 1913.

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UNITED STATES PATENT oEEioE JOHN I-I. BOOM, OIE' NEW YORK, N. Y.,'ASSIGNOR OF TWO-FIFTHS TO FRANK BACH AND NINE ONE-HUNDREDTHS TO KAELEMIL WILHELM BICHEJS, OF NEW YORK, N. Y.

TRAIN-STOP SYSTEM.

Specification of Letters Patent.

Patented Feb. 18, 1913.

Application filed vJanuary v10, 1912. Serial No. 670,410.

`'citizen o;f the United States of America,

residing at 'New York, in the County of New York and State of New York,have invented certain new and useful Improvements in Train-Stop Systems,of which the following is a `specification,

The present invention has for its object to provide a train stop systemof the automatic type, whereby vehicles running on a single track or onintersecting tracks will be prevented from colliding whenapproaching'one another wit-hin a given distance.

In my new system I make use of two electric conduct rs which extendpreferably in the middle of the track and which are divided in equalsections of a mile( or` more, a section of one conductor in one blockbeing conductively connected tov a section of the opposite conduct-or inthe next block. Each train is equipped with a battery or other electricsource, aA motor operatively .Connected to the power controller andbrakes, a. commutator, two relays, a series of contact shoes, of whichtwoare adapted to slide Aover the said electric conductors and l theothers are adapted when the train is about. to enter theblock next tothe crossing to come into contact with shortrconductors conductivelyconnected to the track, and electric connections between the electricsourceA andA the different parts named to bring about the effect to bepresently described.. y

My invention is diagrammatically illustrated in the accompanyingdrawing.. which forms ,a part of this specification' and in whichsimilar reference letters denote cor-v responding parts, Figure 1representing a single track system and Fig. 2 showing the connection ofthe motor to. the power controller and brakes.

With reference-tol*1 igs. 1 and 2, let A and B`denotethegtracks,crossing one another. Let A', A2 denote two electric conconduct-ivelyconnected in adiagonal .line

to a section of the opposite motor line in Aindicate the direction oftravel.

the preceding block and at the crossings the intersecting sections ofthe battery line on the track A and the motor line on the track B andvice versa are conductively connected. Let`T, T2 and T3 denote trains orcars, of which trains T', T2 are on the track A and Ts'is on track B andlet the arrows train is equipped with the Same parts, I shall forbrevitys sakeldenote thesame parts by corresponding reference lettersand numerals, bearing different exponents, thus the parts of train Tbear the -exponent 1, those of train T2 bea-r the exponent 2 and thoseof train T3 the exponent 3. I shall now` describe only the parts oftrain T', it being understood that the same description also applies tothe other two trains shown, with theexception that' references with thecorresponding exponents'l are to be substituted for those of train T. f

a denotes an electric source, b', a motor which may be operativelyconnected to the power controller and brakes of the train in anysuitable manner. A

0 denotes a commutator for. changing the direction ofthe. electriccircuit in accordance with the direction of travel of the train.Sucheommutator'is necessary, for without it, when the direction oftravel of the train is reversed it-would operate in- 4stead ofrearwardly, as intended, on a train ter in.which` direction the train.travels it will always operate on a rear train-running .on the sametrack when coming within a given distance therefrom.

m', y Hdenote -a 'pair of electromagnets arranged opposite one anotherand d' 1s the armature fulcrumed at a `point between the Vtwoelect-romagnets and forming with the latter .and a contact point ve arelay. j. denotes an electromagnet which with the contact points c,Zyforms another relay.

E', D` are contactshoes adaptedv to travel' along the sectionalconductors of the track. 'f gr', It and i l'are contact s hoes which.normally have-noVv functiongexce'pt, as will be seen, when the trainentersior is 4about to leavethe block nearest to the rossingand Sinceeach Y when said shoes come into contact withshort Vrails-m, n, a of thetrack A (or. correspondingly. m", a", yob on track B). The electricconnections are indicated by referv ence numerals. The commutatorcomprises an adjustable arm having insulated sections and contact pointsp', q', r', s', t', u', c', and 'w' arranged in pairsso that the armwhen in ward train T'.

, The current Hows from the '-l- -pole of the battery a' .along Wire lto the contact point g' of the commutator, thence 4passing over tocontact point p and thence to the 'y contact shoe D' resting on asection of :the

conductor A2 which I call .the battery line. The/train T2 havingapproached T' so far that its contact shoes E2, D2 vcontact with thesections in the pruned-ing block of the conductors A', A2"the current isallowed to pass lover tothe I.preceding section -of the opposite motorvline A' and to flow along that section to the contact shoe E2. Fromhere .it flows along wire 11.2 to contact point s2, passing over tocontact pointr2, thence along wiresv92, 82 to the armature d2 of relaysm2, y2, and beingv in contact withI point e2, itvpasses to vthe latterand alongv wire 122, .through the motor b2, along wireA 102 tothe track,along' the latter to the wheels of train T and through wire 13 to thepole of the battery a'. v'The motor. b2 of train T2 by the circuitA ofthe battery -v a of train T' will be set in. operation and will perform'the desiredI function in operating the brakes .and power controller ofvsaid train` T2 in any lsuitable manner. Ifl the traing-T2 is fartherfrom train VT' than the given distance, that is to say, its contactshoes or-trolleys E2, D2 'are not on the sec` tions next preceding thoseon which the contact pieces E', .D of train T' rest, thenj there is noelectric connection between the contact `shoe D of train T and thecontactshoe E2 ,of train T2 vand the motor of the latter. will: not beoperated.' On the other hand, no matter where the train T2A stands`relative to train'T the latters motor will not be affected by thebatteryof the former.

Vi-TeA `will now considertthe operation of thev trains T', T3 on thecross tracks A, B.

At 'points near the beginning of the sec-V tions of the conductors vnextto the crossing I provide on the tracks A, B short rails m2n' and my, nrespectively. Then 11s/henl the train T3 arrivesfirst at the given tancefrom the crossing its battery" will be ready to operate the motor oftrain T' arriving later at the block next to the crossing on track A,the current of the battery a3'.

flowing from the pole of the latter along wire Z2, contacts q2, p3, wire23, contact shoe D3, conductor B2, conductorl A', contact shoe E', wire11,', contact points s',`r, wires 9', 8', armature d', Acontact e', line12', -motor b', wire l0', to track A, thenceback to l track B, wirev132? to pole of battery as'. The 'motorof train T will befoperated. Iftrain Ta is first'toenter on the block near-` est the crossing, it willin the aforenamed manner be allowed to operate train T', if the latterhas advanced so far'that its contact shoe E' enteredl on the section ofthe .h

block nearest the crossing. Simultaneously with the contact shoesE,Denter-ing'on the forward section nearest the crossing, the contact shoeg is adapted to come into conl tact with the short rail ma. Inconseguence thereof, and because of'the train T2 Abeing first on theblock nearest .the crossing, a second battery circuit of train T? willbe closed, the current flowingfrom the -lpole of saidbattery alongwireZ3 to contacts g3, .I

p2, wire 22, contact shoe D3, conductors B2,

A to contact shoe E', wire 11', contact points s', 1", wire 9', 8',relay j', cont-act shoe.

g', rail m to track A, thence to` track B back to' the poleofbattery b3along wire 132. In consequence' thereof, the Aarmature of relay. y" willbefattractedand contact-.between point c', Z' broken. The consequence of`this will be that train T could not ren- -der itself immune from theinfluence ofthe train T3, e. g. it @could not prevent the bat l tery a2of train T3 operating its motor b. On the other "hand, the train T2.,'rn-which thel connection .of contacts 15,113 is not broken, rendersitself immune as soon as its I contact, shoeY f2 arrives at the shortrail nl.

For at this point a circuitof its Vown bat` tery passing'through itsrelay :v3-is closed, the current flowing from the -lpole of the batterya3 alongivvires 12, 33, 42, to contacts 102, '02, thence through lwire53 to relaym2, thence to contacts Z3, Ica, thence along Wire 72, tocontact shoe f3, thence through rail n to track B, thence through wire133 to the .f pole of battery a3. By reason of this circuit, thearmature d2 is-attracted and becomes disconnected from the contact pointe3. Now, if thetrain T owing toits inertia still advances, lso that itscontact'shoe D' enters on'the forward section of the battery line, itcan have no eect` on the train T3 because lthe circuit` fof batteryaremains open and train T3 may proceed, while train the .armatures d',cl3 to their normal position. When th train T3 (referring toaboveexample) reaches the rail o, and its contact shoe 113 getsA intocontact with it, then its own,battery circuit willbe again' closed, thecurrent flowing from -lpole along wires 13, 33, contacts u3, t3, wire153 through relay g3, wire 163, contact shoe 3, rail o", track B, Wheelsof the train T3. to the T-F pole 'of the battery (1.3. In consequencethereof, the armature (Z3 will be attracted in the opposite directionand make again contact with point e3. 'Vhen the train is turned aroundto move in the opposite drectionQthe same will take place-by adjustingthe arm of the com-v mutator c (c2 or '03) to contact with the oppositecontact points not marked by reference letters.l i

.Fig 2 shows by way ofexample a. mode of .operatively connectingthe'motor of a train with the corresponding power controller P and airbrake'K. The controller llever L is suitably connected to a pistonv rod'R of a piston R working in a'stationary.

air cylinder C. The piston ,R is operated fromthe motor I) by a set of.gears Grand a rack M formed on the e'xtension of the rod R, so thatvwhen the motor b is .setin motion by the'battery circuitof anothertrain, it

. lever L intothe starting position may be obtained-by a spring S.-Thislreturn movement of the lever will be .counteracted by thevairpreviously drawn into` the cylinder through the suction valve H.

What I claim and desire to secure by Letters Patent is:

1. In a train stop system, the combination 'with atrack, of twosectional electric conductors along the track, dividing'th'e lat-Y terinto uniform blocks and of which a seca. tion inone block ofone^conductor`isconductively connected to a section in the next blockofA the other. conductor, a moving lvea circuit .breaker meansforoperating lthe latter', 'one pole of ed to .the track/and the -otherto the second i conductor, said connection leading through vsaid circuitbreaker, means conductively connectedto the track, means on the vehiclevadapted tocontrol said first' named means and to make contact with thesecond named 'means, and an electric connection between said electricsource and said third named lmeans, 'se that when contactfis madebetween said second and third means the 4said circuit said motorbeingjconnectfbreaker will be actuated to break the-connection betweensaid motor and .the said second conductor.V

2. In a. train stop system, the'vombin'ation with a track, of twoAsection-al electric conductors along the track dividing the latter intouniform blocks and of'which a'section in one block of one conductorisconductively connected to a sect-ion in the next block ofH t-he otherconductor, a `moving vehicle having an electric source of which one poleis connected to the track and the other to the one of said sectionalconductors ,'a.motor, a -circuit breaker, means for-operating thelatter, one pole of -saidmotor being-.conductively connected to thetrackand the other pole 'to the said other conductor, 4said connectionleading through saidcircuit. breaker, a contact rail adjacent andconductively connected to the track, a contact point on the vehicleadapted to make contact with said l rail, an electric connection betweensaid electric source and the said contact point, so arranged that whenthe circuit is closedy by the contact of said contact oint and rail,saidcircuit will control said first named means, and-a second circuit`breaker interposed between said first named means and said contactpoint, so that when the connection between said first namedl means andsaid contact point is broken bysaid' second circuit breaker the contactmade `between said contact point 'and vrail will Abe ineffective and thebreaking of the connection between the motor and the second conductor isprevented. y

' In a; train stop system, the combination `with a track, of twosectional electric conf ductors along the track, dividing the latter`into uniform blocks and of which a section in one block of oneconductor is conductivelyconnected toa section in thenext block of theother conductor, a moving vehicle having an electric source of which onepole is connected to the track and the other to'one of said sectionalconductors, a motor,a circuit breaker, electrical means vforoperatinglthe latter, lone pole ofthe motor being conductivelyconnected'` to the track and the'other pole thereof to said secondconductor, 'said connection leading through said circuit breaker,contact rails conductively connected to the .track, two contact pointson'the vehicle adapted to successively make contact with the respectivelcontact rails, an electric connection between the electric source, saidcontact is made between the llast named conbreak the connectionbetweenthe'first named nieans'and the {ii-'str namedcontact point.

4.' In a train Stof) 'systcnl,'tl1e combination' with a track, o-'twosectional electric conductors along Athetrack, dividing the latter intouniform blocks and of which a section in oneblock of one conductorisconductively connected tojalsectionin thenextfblo ck of fthe otherconductbiga moving vehicle hai'- 5, QIn-atrafinistipysteni,thefconibination' Witilfa trimmof ingr an electric ing anfelectri'c.source of wl'iichone pole is connected. to' the track; andv the other toone- 'Qfsa1'd-gsectl0nal conductors, a motor, a circuit br eaker,separate electrical nieans for opening and `closing the latter,"one pole'of the motor beingconductii'ely connected to the' trackand'the'othe'pole thereof to the said second c ondl'lctor, saidconnection leading throngh said.: oircuitbreaker, two contact rails.conductively connectedto and arranged at different-places alongth'etrack,V two Acontact pointson the vehicle adapted to Y. successively-inake c"ontact V'with the -respec Vtive 'contact rail's,elec-tric"eonnectionsbetweensaid electricsourceand said two contact'points, said connect-ions' leading through. ligand A closing inea nsresaid electrical spectively,swhe eby' ,when-one 'of said contact.Apoints In( when the other co t'act 1-p'oint '1nakes contact withitscontac ri thecircuit'breaker will o -sectional 1electric.conductors-along into -uni'fornih lts-and of which a section in Oneblock o coridctor'is conductively connected to n thefnext block of theother `co o aiiioying 4vehicle havuree ofsfwliic'lrone pole is connectedtofthet'rack andthe other to `one cpies :of tiiisfpaieii liliaiqbeobtained for e trackj dividing:l the latter ofsaid sectionalconductors,a. rnotor, a circuit breaker, separate electrical means foropening andclosing the latter, one pole ofsaid vmotor 'beingconductively connected'to theV track and the other polethereof to thesaid other conductor, said connection lead-A ing through said circuitbreaker, tlnee 'con tact points carried by said \'el1icl e, three donf'tact rails therefor conductively `connected to the track and of whichtwo are arranged adjacent to each other andjone at a distance" from thesaidtwo contact points, thesa'id contact points being adapted tosuccessively corneinto contactwith their respective. rails,

an electric connection between said' electric source and .one of -saidadjacent contact points, an electric connection Vbetween the electricsource and the said th'i'rd Contact point, 'said electricconnectionsleading through aforesaid electrical (mening),r and closingmeans respectively,.a second circuit breaker interposed between theaforesaid one of the two adjacent Contact points and the s aid electricAmeans for opening'thev first f mamed circuit breaker, electrical means'for operating said second .circuit A.brea-l` ,r, an electricconnectionleading from the other 01 the two adjacent Contact points andthrough lsaid second circuit lil-cirkel-.operatingmeans` "to said secondconductor-.s that when contact and its respective-contactrail lwhile thesec'P ond conductor is energized by' a'circit Howing through it-andthetrack the said s ec'on'd" 'eircnit breaker ,will,be ca'u's `edf to'the is ina-de between the last-'trained contact ntactm-'ltli itsresimctive aker Vwill be opened and connection between the openingineans of the first named circnitb'r'eaker' and the 'tirst'vof the twoAadjacentcontact- -ponts A In testimonyv whereof I aili my signature inpresence of two witnesses. Y

JOHN "H. BOOM- `Witnessesz JOHN T. Carmona', .1 MAX F. DRAMANN.

ie cents each, by addressing' the Coxauiissioner ofilateixts.la'ahi'ngton,D` C.V

